hemeralopia Meaning, Definition & Usage

  1. noun inability to see clearly in bright light
    day blindness.

WordNet

Hem`e*ra*lo"pi*a noun
Etymology
NL., fr. Gr. , the opposite of day + of . See Nyctalopia.
Definitions
  1. (Med.) A disease of the eyes, in consequence of which a person can see clearly or without pain only by daylight or a strong artificial light; day sight. ✍ Some writers (as Quain) use the word in the opposite sense, i. e., day blindness. See Nyctalopia.

Webster 1913